EXPRESS PROTRACTOR

EXPRESS PROTRACTORDepending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.

To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.

Recommend to read

  • VISE WITH GEARVISE WITH GEAR
    This device will serve you well — will facilitate the drilling of holes: in the grip gear grip force and a half times more than usual, which increases the reliability of fastening, and...
  • “BROAD-SHOULDERED” GOATS“BROAD-SHOULDERED” GOATS
    If you have extensive repairs to the walls or ceiling, a ladder is not enough: we need a reliable platform. So, and goats, which will form master. To simplify this preliminary work, use...